Sun sensor for controlling RolloTron and Troll This sensor is available for controlling the shutters on the basis of the light level in conjunction with a RolloTron belt winder or a Troll timer. The light level sensor is fixed to the glass window pane with the help of the suction cup at the end. The other end has a connector plugged into RolloTron or Troll. When a pre-defined light level is achieved as a result of changing sunlight or in the twilight hours, the shutter is raised or lowered to the sensor.
